<%--
  Created by IntelliJ IDEA.
  User: 云哥
  Date: 2023-05-19
  Time: 17:24
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
    if (session.getAttribute("sessionUserName")==null){
        //未登录则跳转到登录页面重新登录后访问
        response.sendRedirect("login.jsp");
    }
%>